JPH0632007Y2 - Energy-saving pot for heat retention cooking - Google Patents

Description

[Detailed Description of the Invention] "Industrial field of application" This invention can stop the heating after boiling or after a lapse of a predetermined time after boiling, and can sufficiently cook with only the residual heat of the pot and the contents. The present invention relates to an energy-saving cooking pot for heat preservation that does not release the nutritive value and “scent” of cooked foods.

"Conventional technology" Conventionally, as a cooking method for cooking, not only the process of the initial temperature rise, but also the heating is continued even after boiling occurs in the pot,
Generally, the heating is stopped only when the food inside the pan becomes soft enough to cook.

However, according to the research conducted by the inventors,
Most foods do not require a temperature of 100 degrees Celsius, for example potatoes should be boiled well at 80-90 degrees Celsius and meats at 80 degrees Celsius.
In the above, protein denaturation completely occurs. Therefore, when boiling food, it is necessary to continue heating from the outside after the inside reaches 100 ° C and boiling begins.
Mostly not needed. Basically, when you boil food, the temperature (mostly 80 ~
It is only necessary to keep the temperature at 90 ° C for a certain period of time (in most cases, 20 minutes to 1 hour). When boiling food, the energy required for the initial temperature rise is necessary, but Persistence is unnecessary except for the purpose of evaporating water to boil down.

In addition, as a result of various studies, seasoning, that is, impregnation of each seasoning added at the beginning with the food, is caused by the temperature gradient in the food that occurs when the temperature drops after heating and the permeation of water that occurs between the broth and the food and in the food. What is done by the pressure difference,
Almost confirmed. Therefore, in order to carry out the seasoning efficiently, it is important to gradually and slowly cool the temperature, rather than abruptly. If the temperature is rapidly lowered,
Since the osmotic pressure gradient of water in the food becomes large and the pressure inside the food becomes lower than the outside, the structure of the food is crushed and the food contracts.

Furthermore, in order to retain the "fragrance", which is the main element of the nutritional value and deliciousness of each food, even after cooking, it is important not to overheat. This also applies to prevention of collapse.

Based on these findings, after heating the food required for the transformation of each food, if the residual heat quantity is prevented from scattering (keeping heat) as much as possible and the temperature-decreasing process of the food is made gentle, the total heating quantity and the added water content required for cooking Can significantly reduce the nutritional value,
It has become clear that a fully seasoned food can be obtained without losing the aroma and shape.

Prior to the present invention, the present inventors have proposed several pots for heat-retaining cooking that can efficiently perform the above-mentioned heat-retaining cooking, which is different from the conventional cooking method.

The latest of these prior applications (Actual Application Sho 62-99964
No. 6), the pot for heat retention cooking is, for example, No. 6
It has a structure as shown in FIGS.

In the figure, reference numeral 1 is a pot body and 2 is a lid.

The pot main body 1 is composed of a container-shaped inner pot portion 3 and an outer wall portion 5 provided on the outer side of the inner pot portion 3 with gaps 4 at predetermined intervals.

The inner pot portion 3 has a diameter that is slightly reduced toward the fixed portion 3a, and the upper end of the opening portion is somewhat outwardly enlarged to form a locking edge 3b for the lid body 2. .

The outer wall portion 5 is formed into a simple cylindrical shape, and the upper end thereof is rounded outward to be a reinforcing peripheral edge 5a.

Further, handles 6, 6 are fixed to the opposite side portions of the upper end portion of the inner pot portion 3. The plate-like arm portions 7 of these handles 6,
In the lower part of 7, there are formed recesses 7a, 7a into which the reinforcing peripheral edge 5a of the outer wall part 5 is loosely fitted, and the engaging rod 8 is provided between the outer lower parts of the recesses 7a of the plate-shaped arm parts 7, 7. It has been bridged and fixed. The plate-shaped arm portions 7, 7 are attached so that the width direction thereof extends along the vertical direction of the inner pot portion 3. This is to prevent the heat flow of the combustion gas rising in the void 4 from being obstructed. When the outer wall portion 5 is fitted into each of the recesses 7a, the reinforcing peripheral edge 5a at the upper end of the outer wall portion 5 is curved as shown in FIG. The plate-shaped arm portions 7, 7 come into contact with the engaging rod 8 at an intermediate portion thereof. When the handle 6 is pushed down against the outer wall portion 5 in this state, the reinforcing peripheral edge 5a is elastically deformed with respect to the engaging rod 8 and the engaging rod 8 passes over the reinforcing peripheral edge 5a and is positioned below the reinforcing peripheral edge 5a. To do. as a result,
The reinforcing peripheral edge 5a is engaged and fixed between the engaging rod 8 and the upper bottom portion of the recess 7a so that the inner pot portion 3 and the outer wall portion 5 can be integrated. Conversely, if the outer wall portion 5 is pushed down with respect to the handle 6, the engagement between the engaging rod 8 and the reinforcing peripheral edge 5a is released, and the inner pot portion 3 and the outer wall portion 5 can be easily separated. . It is preferable that the engaging rod 8 has elasticity. A coiled spring may be used.

In the above structure, the recess 7a and the engaging rod 8 form a lock mechanism 9. With this lock mechanism 9,
When the leg of Gotoku of the gas stove hits only the inner pot part 3 and the outer wall part 5 protrudes to the outer periphery of the gotoku, the outer wall part 5 slides down, and the upper and lower positions of the inner pot part 3 and the outer wall part 5 are at the upper part. It is possible to prevent inconveniences such as being too vacant and making it impossible to see the gas flame from the side.

On the other hand, the lid 2 includes an upper wall portion 10 having a handle 10a and a lower wall portion 11 having a handle 11a.
0 and the lower wall portion 11 are integrally and detachably combined so as to include the void portion 12 therein. The lower wall portion 11 is made of a heat-resistant material such as heat-resistant plastics or glass having low heat conductivity, and prevents the heat energy inside the inner pot portion 3 from being dissipated to the outside. It has become. The upper wall portion 10 can be made of the same material as the lower wall portion 11, but is preferably made of the same material as the outer wall portion 5 (for example, stainless steel) in order to reflect radiant heat.

The lid 2 is not in direct contact with the food to be heated inside the inner pot portion 3 and has air therebetween, so that the lid 2 has a higher heat energy than the bottom portion 3a and the side surface portion of the inner pot portion 3. Since there is little dissipation, in order to reduce costs, it is possible to realize a considerable heat retaining effect even if it is not a double structure but a single structure as usual. At this time, needless to say, if a material having a high heat insulating property such as heat-resistant plastics or heat-resistant glass is used, the heat retaining effect can be further improved.

When the cooking pot having the above structure is placed on a gas stove and heated, for example, even if the flame of the gas stove is a little strong, the flame is blocked by the lower end portion of the outer wall portion 5 and leaks outward. Instead, it goes toward the inside of the void 4. Then, the high-temperature air that has entered the void portion 4 is evenly distributed on the entire outer peripheral surface of the inner pot portion 3 due to the shape of the cylindrical void portion 4, and the heat energy is efficiently transmitted to the food inside the pot. Will be done. Here, the upper opening portion of the cavity 4 formed between the inner pot portion 3 and the outer wall portion 5 ensures a sufficient exhaust port area because the outer wall portion 5 is formed in a simple cylindrical shape. ing. Therefore, the flow velocity of the hot air of the combustion gas rising in the void 4 does not decrease during heating, and the amount of air from the outside attracted from the bottom of the pan increases accordingly. As a result, the outer wall portion 5 will not be overheated to a high temperature. Moreover, according to the said structure, since the outer wall part 5 is a simple cylindrical shape, the outer wall part 5 can be manufactured at low cost.

Further, a lock mechanism 9 that can easily attach and detach the inner pot portion 3 and the outer wall portion 5 is fixed to the inner pot portion 3 by a handle 6.
Since the pan 6 is provided on the inner side of the inner pot portion 3, the outer wall portion 5 and the inner pot portion 3 can be easily released from each other while supporting the pot with the handle 6. When transferring to a container, the outer wall portion 5 can be easily removed, and the outer wall portion 5 does not get in the way.

Also, after the inner pot portion 3 has boiled, heating is stopped, and if this inner pot portion 3 is placed on a flat plate, the flat plate closes the lower end opening edge of the outer wall portion 5, and the high temperature air in the void portion 4 The heat energy accumulated in the void 4 is stored without escaping to the outside despite the loss of the passage path and the presence of the upper opening. The heat energy does not dissipate the heat in the inner pot portion 3 to the outside, and if the lid body 2 is covered, the inner pot portion 3 is kept at a high temperature for a long time. .
As a result, according to this pan, it is possible to boil it sufficiently with only the energy required until the initial boiling, the amount of added water is small, and the temperature is lowered very slowly, so that the taste of food can be improved. Immersion can be sufficiently performed.

Further, when the pot is used, the inner pot part 3 and the outer wall part 5 are simply in contact with each other, so that the contact area is small. Therefore, the heat conduction from the inner pan part 3 to the outer wall part 5 is small, and the heat energy is further increased. Escape can be reduced. After the use, the pot body 1 can be easily disassembled into the inner pot portion 3 and the outer wall portion 5, so that the pot can be easily cleaned. Furthermore, in addition to being able to be decomposed into the inner pot portion 3 and the outer wall portion 5, the inner pot portion 3 is tapered toward the bottom portion 3a thereof, so that the outer wall portion 5
Since it is a cylindrical shape, if you slightly shrink it toward the lower end, you can stack a large number of inner pot parts 3 with each other and outer wall parts 5 with outer wall parts 5 in a small space. Can also be accommodated.

Here, the heat-retaining cooking method which can be put into practical use for the first time by the heat-retaining cooking pot and the advantages of this pan are summarized as follows.

(B) Energy saving: It is energy saving because it is efficient in heating and it is not necessary to continue boiling it with a low heat.

(B) Labor saving; It takes a lot of time to keep cooking on a low heat for a long time, but in heat-retaining cooking, it takes only a few minutes to heat until boiling occurs, and then the cooking is completed by leaving it alone. In addition, there is no chance of accidentally burning.

(C) The cooked food is warm for a long time.

(D) The scent does not escape, so the food is delicious.

(E) Uniform around the fire.

(F) The occupation time of the range is short, so the range can be effectively used.

(G) It's good because it doesn't boil too much. There is little decomposition of nutrients.

(H) The upper opening portion of the void formed between the inner pot portion and the outer wall portion has a sufficient exhaust port area because the outer wall portion is formed in a simple cylindrical shape. Therefore, the flow velocity of the hot air of the combustion gas rising in the void during heating does not decrease, and the amount of air from the outside attracted from the bottom of the pot increases accordingly. As a result, the outer wall portion is not overheated and becomes high temperature, and can be placed anywhere as long as it is flat, which is safe and convenient in handling.

[Problems to be Solved by the Invention] By the way, when the above-mentioned conventionally proposed pots for heat insulation cooking were further examined practically, it was found that there are the following points to be improved.

That is, at present, there are various ranges of gas sources as heating sources in ordinary households, and not only gas ranges but also heating systems having a flat heating surface such as electric ranges and electromagnetic cookers are available. is there. Therefore, it is necessary that the previously proposed pot for heat retention cooking can be used as a heating source in various sizes of gas stoves, electric stoves, electromagnetic cookers and the like.

On the other hand, in the conventional pot for heat retention cooking, as shown in FIG. 6 (a), the lower end portion 5 b of the outer wall portion 5 is the bottom portion 3 of the inner pot portion 3.
It projects further below a. This is because when the bottom portion 3a of the inner pot portion 3 does not come into close contact with the flat surface and faces through the air layer when the material is removed from the heat and placed on a flat place to keep the heat after the heating is finished, the heat is dissipated. It is necessary to prevent it.

However, when using this hot pot for cooking at home, depending on the gas range used, it may be different from the one shown in Fig. 6 (a).
As shown by the dotted line in Fig. 5, the length of the Gotoku 13 may extend only up to the circumference of the same diameter as the diameter of the outer wall portion 5. In such a case, the pot is placed on the Gotoku 13 It is very dangerous to put it on stably, and there is a risk that the pan will fall off some of the legs of Gotoku 13 and the contents may be spilled, which is very dangerous.

When the heating source is an electric range or an electromagnetic cooker, the inner pot 3
It is desirable that the bottom portion 3a of the above is in close contact with a heating surface such as a heater. However, in consideration of this convenience, the outer wall portion 5
If the lower end 5b of the inner pot part 3 is located on the same horizontal plane as the bottom part 3a of the inner pot part 3, the bottom part 3a of the inner pot part 3 will be in close contact with the placing surface when keeping it warm from the heat source. The necessary air layer is not formed, and the heat retaining effect is significantly reduced. Of course, if you use a plate of heat insulating material such as Styrofoam on the rug dedicated to placing this pot, you can enhance the heat retention effect, but like the conventional pot for heat insulation cooking, it was placed on a flat surface. The structure in which an air layer is formed on the bottom portion 3a of the inner pot section 3 is sometimes more convenient because it is not necessary to specify the place where the pot is placed. Such convenience is important in a kitchen where pots are always used on a daily basis.

"Means for Solving Problems" The present invention relates to a container-shaped inner pot portion, a cylindrical outer wall portion having a diameter larger than that of the inner pot portion, or having a height dimension equal to or slightly longer than the inner pot portion, and the inner pot portion. In an energy-saving pot for heat-retaining cooking, which comprises a lid for closing an opening, and the inner pot part and the outer wall part are connected by a handle so that a gap is formed between the inner pot part and the outer wall part. The outer wall is movable up and down with respect to the handle, and the outer wall is at least the position where the bottom of the inner pot and the lower end of the outer wall are flush with each other and the lower end of the outer wall is It is characterized in that a fixing mechanism for fixing to the handle is formed at a position below the bottom of the inner pot.

That is, the feature of this invention is that the outer wall part separated from the inner pan part is a simple cylinder that is easy to manufacture, and the inner pan part and the outer wall part can be adjusted in height by the handle. By connecting, when placed on a heating source,
The bottom of the inner pot and the bottom of the outer wall can be adjusted so that they are located on the same horizontal plane, so that they can be in close contact with any planar heating source, and they are lowered from the heating source and placed on a flat surface to keep them warm. In this case, the lower end of the outer wall portion can be adjusted to be lower than the bottom portion of the inner pot portion, and an air layer for heat insulation can be formed between the bottom portion of the inner pot portion and the flat surface.

[Operation] According to the above configuration, the cylindrical outer wall portion is connected to the inner pot portion by the fixing mechanism so as to be movable up and down, and the inner pot can be easily operated by the operation of the fixing mechanism. Since the height of connection of the outer wall to the wall can be adjusted, when using a gas range, electric range, electromagnetic cooker, or any other heating source, the inner wall and outer wall can be fixed by fixing the outer wall in the upper position. The bottom of the inner pot part can be brought into close contact with the heating surface by aligning the lower end of the part with the same horizontal plane, and by fixing the outer wall part in the downward position during heat retention, the bottom part of the inner pot part is placed between the bottom part and the horizontal surface. An air layer can be interposed to enhance the heat retaining effect.

As described above, according to the pot for heat insulation cooking of the present invention, it can be safely used for any heat source, and can be placed on any flat surface for effective heat insulation. .

Hereinafter, the present invention will be described in more detail with reference to embodiments.

"Embodiment 1" FIGS. 1 (a) and (b) show a first embodiment of the present invention.
In the figure, the same parts as those in FIGS. 6 (a) and 6 (b) are designated by the same reference numerals to simplify the description.

The feature of this embodiment lies in the structure of the handle 20 portion, and the outer wall portion 5 has the same shape and size as the conventional one.

The handles 20 and 20 are fixed to opposite side portions of the upper end portion of the inner pot portion 3 as in the conventional case. The plate-like arms 2 of these handles 20
Recesses 21a, 21a into which the reinforcing peripheral edge 5a of the outer wall portion 5 is loosely fitted are formed near the inner pot portion 3 of 1, 21 and the plate-like arm portion 21,
Engaging rods 22 are bridged and fixed between the outer lower portions of the respective concave portions 21a of 21. The structure up to this point is almost the same as the conventional structure, except that the vertical length of the recess 21a is large and the mounting position of the engaging rod 22 is considerably below the recess 21a. A rotary locking metal fitting (fixing mechanism) 23 is attached between the plate-like arm portions 21, 21. As shown in FIG. 2 (a), the rotation locking metal fitting 23 is a metal fitting having a structure in which each end of the crank-shaped arm portions 23a, 23a is integrally connected by a plate-shaped handle portion 23b. , The handle 20 by the shaft pin 23c at the first bent portion of each arm portion 23a.
Is rotatably fixed. A vine winding spring (not shown) is attached to the shaft pin 23c.
With respect to 23c as a center, the hook 23b is always urged in the rotation locking metal fitting 23 in the downward direction. This rotation locking metal fitting
A locking projection 24 is provided on the inner surface of the handle 20 near 23, and the rotary locking metal fitting 23 is normally locked by this locking projection, and its arm portion 23a is made substantially horizontal, and The tip of the arm portion 23a is placed at a position intersecting with the recess 21a. Therefore, if the handle portion 23b is turned upward, the tip end portion of the arm portion 23a of the turning locking metal fitting 23 can be moved from the recess 21a. When the rotation locking metal fitting 23 is in the normal state, the length dimension from the lower end of the tip portion of the arm portion 23a to the upper end of the recess 21a is set to be 5 to 10 mm.

In the above-mentioned structure, when the handle 20 is pushed down against the outer wall portion 5 without operating the rotation locking metal fitting 23 in a normal state, the reinforcing peripheral edge 5a is elastic with respect to the engaging rod 22 as in the conventional case. The engaging rod 22 is deformed to overcome the reinforcing peripheral edge 5a, and the engaging peripheral edge 5a
And the upper end of the reinforcing peripheral edge 5a is held down by the tip of the arm portion 23a of the rotary locking metal fitting 23, and the outer wall portion 5 is fixed to the handle 20 by the engaging rod 22 at this position. In this position, the lower end of the outer wall portion 5 is below the bottom portion 3a of the inner pot portion 3. Therefore, in this state, the pot is suitable to be placed on a flat plate and kept warm.

On the other hand, in order to place the lower end portion 5b of the outer wall portion 5 above or the same horizontal position as the bottom portion 3a of the inner pot portion 3 so as to be suitable for placing on various heating sources, for example, place the pot on a horizontal plate. As shown in FIG. 2 (c), while holding and holding the handle 20, the hook portion 23b of the rotation locking metal fitting 23 is moved upward, the handle 20 is pushed down, and the reinforcing peripheral edge 5a of the outer wall portion 5 is gripped by the handle 20. The upper end of the concave portion 21a may be brought into contact with the rotation locking metal fitting 23 and returned to the normal position. As a result, the reinforcing peripheral edge 5a is pressed by the tip portion of the arm portion 23a of the rotation locking metal fitting 23 and the upper end of the concave portion 21a, and the outer wall portion 5 is fixed to the handle 20 at this position, and the lower end portion of the outer wall portion 5 is fixed. 5b
Is located at the same horizontal position or above the bottom portion 3a of the inner pot portion 3. Further, in order to switch from this heating state to the heat retention state, for example, hold the handle 20 with the pan placed on the gas range, rotate the rotation locking metal fitting 23, lift the handle 20 as it is, and lift the entire pan. By the way, the rotation locking metal fitting 23 may be returned. As a result, the reinforcing peripheral edge 5a of the outer wall portion 5 descends in the recess 21a of the handle 20 and locks on the engaging rod 22, where the rotation locking metal fitting 23 returns, and the tip of the arm 23a is recessed. 2
By being located on the reinforced peripheral edge 5a in 1a, FIG.
As shown in (b), the reinforcing peripheral edge 5a is vertically held down by the engaging rod 22 and the tip of the arm portion 23a of the rotation locking metal fitting 23, and the outer wall portion 5 is fixed in the downward movement position to keep the heat. Can be in a suitable state.

In this way, the rotary locking metal fitting 23 is rotated while holding the handle 20 and the handle 20 is moved up and down, and then the rotational displacement of the rotary locking metal fitting 23 is released. The horizontal fixing position of the lower end portion 5b of the outer wall portion 5 with respect to the bottom portion 3a can be moved up and down, and it can be applied to various types of heating sources, and at the same time, the flat plate on which the pot is placed and the inner pot portion even when the temperature is kept warm A heat retaining space can be formed between the bottom portion 3a and the bottom portion 3a to effectively maintain heat.

Second Embodiment FIGS. 3 (a) (b) (c) show a second embodiment of the present invention, which is characterized by the structure of the fixing mechanism 30 of the outer wall portion 5. The fixing mechanism 30 includes the plate-like arm portions 21 and 21 of the handle 20.
The guide rails 31 and 31 fixed to the inner surface of the, the stopper 32 in which the bent end portions 32a and 32a of the guide rails 31 and 31 are slidably inserted, and the stopper 32 to the inner pot portion 3 It is composed of springs 33, 33 which are biased toward each other.

The guide rail 31 has both ends of the plate-shaped member bent, and notches at the ends of the bent ends on the same side.
31a and 31a are formed.

Further, the stopper 32 has both ends 32a, 32a of a long plate-shaped member having a narrow central portion bent at a right angle.
Semicircular engagement recesses 32b and 32b are formed on the tip surfaces of a and 32a.

The stopper 32 has springs 33, 33 with both ends 32a, 32a inserted into the guide rails 31, 31, respectively.
Is urged toward the inner pot part 3 by the, and in the normal state, the central part of the stopper 32 is a notch part of the guide rail 31.
The engaging recesses 32b, 32b on the tip surfaces of the both ends 32a, 32a are located at the upper ends of the recesses 21a of the handle 20. The gap between the end 32a of the stopper 32 and the engagement rod 22 is set to be slightly larger than the diameter of the reinforcing peripheral edge 5a of the outer wall 5.

Thus, in the above structure, the stopper 32 is not operated and is left in the normal state, and the handle 20 is attached to the outer wall portion 5.
When pushing down, the reinforcing rod 5a is elastically deformed with respect to the engaging rod 22 as in the conventional case, the engaging rod 22 rides over the reinforcing edge 5a and is located under the reinforcing edge 5a, and the upper end of the reinforcing edge 5a is Pressed by both ends 32a, 32a of the stopper 32,
At this position, the outer wall portion 5 is fixed to the handle 20. In this position, the lower end of the outer wall portion 5 is below the bottom portion 3a of the inner pot portion 3. Therefore, in this state, the pot is suitable to be placed on a flat plate and kept warm.

On the other hand, in order to place the lower end portion 5b of the outer wall portion 5 above or the same horizontal position as the bottom portion 3a of the inner pot portion 3 so as to be suitable for placing on various heating sources, for example, place the pot on a horizontal plate. Putting it on, while holding the handle 20, the stopper 32 is moved away from the inner pot part 3, the handle 20 is pushed down, and the reinforcing peripheral edge 5a of the outer wall part 5 is brought into contact with the upper end of the recess 21a of the handle 20, It is sufficient to return the stopper 32 to the normal position. As a result, Fig. 3
As shown in (c), the reinforcing peripheral edge 5a is formed on both ends 3 of the stopper 32.
It is pressed by the engaging recesses 32b, 32b on the front end surfaces of the recesses 2a, 32a and the upper end of the recess 21a. At this position, the outer wall 5 is fixed to the handle 20, and the lower end 5b of the outer wall 5 is the inner pot 3. Located at the same horizontal position or above the bottom part 3a.

Also, to switch from this state suitable for heating to the state suitable for heat retention, for example, hold the handle 20 with the pan placed on the gas stove, pull the stopper 32 to the handle part of the handle 20, and then hold the handle as it is. Lift the 20 and return the stopper 32 when the whole pot is lifted up against the outer wall 5. As a result, the reinforcing peripheral edge 5a of the outer wall portion 5 is fixed to the handle 20.
3a descends in the recess 21a and is locked on the engaging rod 22, whereupon the stopper 32 returns, and the stopper 32 is positioned on the reinforcing peripheral edge 5a in the recess 21a. As shown, the reinforcing peripheral edge 5a is pressed up and down by the engaging rod 22 and the stopper 32, and the outer wall portion 5 is fixed in the downward movement position, so that it can be brought into a state suitable for heat retention.

In this way, by moving the stopper 32 while holding the handle 20 and moving the handle 20 up and down, it is possible to release the moving displacement of the stopper 32, and then the lower end portion 5b of the outer wall portion 5 of the outer wall portion 5 with respect to the bottom portion 3a of the inner pot portion 3 is released. The horizontal fixed position can be moved up and down, and it can be applied to various types of heating sources, and at the same time, a warming space is provided between the flat plate on which the pot is placed and the bottom part 3a of the inner pot part 3 even after the temperature is raised. It can be formed and effective heat retention can be carried out.

"Embodiment 3" FIGS. 4 (a) and 4 (b) show a third embodiment of the present invention.
The feature of this embodiment is that the fixing mechanism 41 of the outer wall portion 40 is
And is formed over the handle 42. That is, the fixing mechanism 41 includes a pair of inclined holes 43, 43 formed in the upper portion of the outer wall portion 40, and connecting arms 44, 44 provided in the handle and penetrating the inclined holes 43, 43 at the same time. It is configured.

The outer wall portion 40 is formed by simply forming a metal plate into a cylindrical shape, and the upper end portion thereof does not have a reinforcing peripheral edge formed by inverting the end portion as in the above-described embodiments. further,
The outer wall portion 40 is different from each of the embodiments described above in that a pair of inclined holes 43, 43 are formed on the peripheral surfaces of the upper portion facing each other. The inclined hole 43 has a long hole shape, and its upper end and lower end are expanded in diameter downward and upward, respectively, to form an upper diameter expansion locking portion 43a and a lower diameter expansion locking portion 43b, respectively. Further, an operation protrusion (hereinafter referred to as an operation protrusion) 45 is attached to the upper portion of the inclined holes 43, 43.

On the other hand, the handle 42 is configured such that the handle portion 47 is connected to the fixed U-shaped mounting metal fitting 46 on the outer surface of the inner pot portion 3 via the connecting arms 48, 48. The connecting arm 48 is shown in FIG.
As shown in (a), the cylindrical post 48a and this post 48a
It is composed of a screw 48b that penetrates the inside, and this handle 4
It is loosely fitted in the inclined hole 43 of the outer wall portion 40 at the time of assembling 2.

Then, in the above-mentioned configuration, first, in order to place the lower end portion 40b of the outer wall portion 40 above or below the bottom portion 3a of the inner pot portion 3 so as to be suitable for placing in a heated state on various heating sources, a handle is provided. While holding the handle 47 of 42, the operation protrusion 45
It is sufficient to rotate the pot in the direction of arrow A in FIG. (A) to the full extent, and place the pot on the heating source in that state. As a result, the connecting arm 4
8, 48 are located in the lower expanded portion 43b, 43b of the inclined holes 43, 43,
Even if the outer wall portion 40 tries to descend by its own weight, the connecting arm 48,
48 is locked to the lower expanded portions 43b, 43b and is stabilized at this position, and the lower end portion 40b of the outer wall portion 40 is located at the same horizontal position or above the bottom portion 3a of the inner pot portion 3.

Further, in order to switch from the state suitable for heating to the state suitable for heat retention, the operation protrusion 45 is fully rotated in the direction of arrow B in FIG. 4 (a) while holding the handle portion 47 of the handle 42. Move it and place the pan on the flat plate in that state. As a result, the connecting arms 48, 48 are connected to the upper expanded portion 43 of the inclined holes 43, 43.
The lower end portion 40b of the outer wall portion 40 located at a, 43a is located below the bottom portion 3a of the inner pot portion 3, and even if the inner pot portion 3 tries to descend by its own weight, the connecting arms 48, 48 are at the upper portion. Expanded part 43
Inner pot part 3 to lock at a and 43a and stabilize at this position
A space for keeping heat can be formed between the bottom 3a of the plate and the flat plate.

As described above, the horizontal fixing position of the lower end portion 40b of the outer wall portion 40 with respect to the bottom portion 3a of the inner pot portion 3 can be moved up and down simply by rotating the outer wall portion 40 with the operation protrusion 45 while holding the handle 20. It can be applied to a heating source of the shape, and at the same time, it is possible to form a heat-retaining space between the flat plate on which the pot is placed and the bottom 3a of the inner pot 3 even in the heat-retaining after the temperature is raised, and to carry out effective heat-retaining. it can.

"Fourth Embodiment" FIGS. 5 (a), (b) and (c) show a fourth embodiment of the present invention. A fixing mechanism 51 for the outer wall portion 50, which is a feature of this embodiment.
Is a stopper 54 that is removably attached to the lower portion of a handle portion 53 of a handle 52 having substantially the same shape as that of the above-described embodiment, and a pair of long holes 55, 55 and a circle formed in the upper portion of the outer wall portion 50. It is composed of holes 56 and 56.

As shown in FIG. 5 (b), the stopper 54 has pin-shaped members 54a, 54a which horizontally pass through the grip portion 53, respectively.
And a plate-like handle 54b integrally connecting these at the ends, and by a spring 57 provided in a sliding hole for sliding the pin-shaped member 54a, The stopper 54 is urged toward the inner pot portion 3,
The tip of the pin-shaped member 54a is adapted to be fitted into the long hole 55 or the round hole 56 of the outer wall portion 50.

In the figure, reference numeral 58a indicates a mounting metal member that constitutes the handle 52, and 58b indicates a connecting metal member. The connecting fitting 58b penetrates the elongated hole 55.

Then, in the above-mentioned configuration, first, in order to put the lower end portion 50b of the outer wall portion 50 above or below the bottom portion 3a of the inner pot portion 3 so as to be suitable for placing in a heated state on various heating sources, a stopper is required. The stopper 54 may be returned after moving 54 in a direction away from the inner pot portion 3 and subsequently pressing down the pot on a flat surface while holding the grip portion 53 of the handle 52.

As a result, the connecting arms 58b, 58b abut the lower ends of the elongated holes 55, 55, and the pin-shaped members 54a, 54a of the stopper 54 have round holes 56,
Even if it fits in 56 and the outer wall 40 tries to descend by its own weight,
Since the pin-shaped members 54a, 54a of the stopper 54 are locked in the round holes 56, 56, the lower end portion 50b of the outer wall portion 50 is located at the same horizontal position or above the bottom portion 3a of the inner pot portion 3. .

Further, in order to switch from the state suitable for heating to the state suitable for heat retention, the stopper 54 is moved in a direction away from the inner pot part 3 and the handle part 53 of the handle 52 holds the pot part on the outer wall part.
After lifting with respect to 50, the stopper 54 may be returned. As a result, the connecting arms 58b, 58b abut on the upper ends of the elongated holes 55, 55, and the pin-shaped member 54 of the stopper 54.
The a and 54a are fitted into the long holes 55 and 55, and even if the inner pot part 3 is going to descend by its own weight, the pin-shaped members 54a and 54a are formed into the long holes 55 and 55.
Since it is locked at the lower end of the inner pot and is stable at this position, a space for keeping heat can be formed between the bottom portion 3a of the inner pot portion 3 and the flat plate.

In this way, simply by moving the stopper 54 while holding the handle 20, the lower end portion of the outer wall portion 50 with respect to the bottom portion 3a of the inner pot portion 3
The horizontal fixed position of 50b can be moved up and down, and it can be applied to various types of heat sources, and at the same time, it keeps heat between the flat plate on which the pot is placed and the bottom 3a of the inner pot 3 even when the temperature is raised. A space can be formed and effective heat retention can be implemented.

In each of the embodiments, when heating is performed by a heating source having a heating surface such as an electric range, the position of the lower end of the outer wall is at the same horizontal level as the bottom of the inner pot or a slightly higher position. Need to be set.
This is because it is necessary to bring the bottom of the inner pot part into close contact with the heating surface.

[Advantages of the Invention] As described above, the present invention has a container-shaped inner pot portion, a cylindrical outer wall portion having a diameter larger than or equal to or slightly longer than the inner pot portion, and the inner pot portion. An energy-saving pot for heat-retaining cooking, which comprises a lid for closing the opening of the inner pot part and the outer wall part, and is connected by a handle so that a space is formed between the inner pot part and the outer wall part. In the above, the outer wall portion can be moved up and down with respect to the handle, and the outer wall portion has a position where at least a bottom portion of the inner pot portion and a lower end of the outer wall portion are flush with each other and a lower end of the outer wall portion. It is characterized in that a fixing mechanism for fixing to the handle is formed at a position below the bottom of the inner pot.

That is, the feature of this invention is that the outer wall part separated from the inner pan part is a simple cylinder that is easy to manufacture, and the inner pan part and the outer wall part can be adjusted in height by the handle. By connecting, when placed on a heating source,
The bottom of the inner pot and the bottom of the outer wall can be adjusted so that they are located on the same horizontal plane, so that they can be in close contact with any planar heating source, and they are lowered from the heating source and placed on a flat surface for heat retention. In this case, the lower end of the outer wall can be adjusted to be 5-10 mm below the bottom of the inner pot, and an air layer for heat insulation can be formed between the bottom of the inner pot and the flat surface. It is in.

Therefore, according to the present invention, the cylindrical outer wall portion is connected to the inner pot portion by the fixing mechanism so as to be movable up and down, and the inner pot portion can be easily operated by the fixing mechanism. Since the fixed height of the outer wall part to the can be adjusted up and down by about 5-10 mm, by fixing the outer wall part in the upward position when using a gas range, an electric range, an electromagnetic cooker or the like as the heating source. The inner pot and the lower end of the outer wall can be aligned on the same horizontal plane so that the bottom of the inner pot can be in close contact with the heating surface.Also, when the temperature is kept warm, the outer wall is fixed in the down position and placed on the bottom of the inner pot. An air layer may be interposed between the surface and the horizontal surface to enhance the heat retaining effect.

As described above, according to the pot for heat insulation cooking of the present invention, it can be safely used for any heat source, and can be placed on any flat surface for effective heat insulation. .

[Brief description of drawings]

1 (a) and 1 (b) show a first embodiment of the present invention.
(a) is a side view of a partial cross-section of the pot of the present invention, (b) is a plan view of the pot, and FIGS. 2 (a), (b) and (c) are the main parts of the first embodiment. FIG. 3 shows a fixing mechanism, (a) is a perspective view, (b) and (c) are side configuration diagrams for explaining the operating state, respectively, and FIG. 3 (a) (b)
(c) shows the second embodiment of the present invention, (a) is a perspective view of the fixing mechanism which is the main part of the pot of the present invention, (b) is an exploded perspective view of the fixing mechanism, (c) ) Is a perspective view of the fixing mechanism in operation, and FIGS. 4 (a) and 4 (b) show a third embodiment of the present invention.
Is an exploded perspective view of the pot of the present invention, (b) is a plan view of the pot, 5th
Figures (a) (b) (c) show a fourth embodiment of the present invention.
Is a side sectional view of a fixing mechanism which is an essential part of the present invention, (b) is a sectional configuration view taken along the line BB of (a), (c) is a side view of the outer wall portion,
Figures 6 (a) and (b) show a conventional pot for heat insulation cooking.
(a) is a side view showing a partial cross section, and (b) is a plan view. 3 ... Inner pot, 5, 40, 50 ... Outer wall, 20, 42, 52 ... Handle, 21 ... Plate arm, 21a ... Recess, 22 ... Engaging rod, 23 ... Dynamic locking metal fitting (fixing mechanism), 23a …… arm part, 23b …… handle part, 23c …… axis pin, 24 …… locking protrusion, 30,41,51 …… fixing mechanism, 31 …… guide rail , 31a ... notch, 32 ... stopper, 32a ... bent ends, 32b ... engaging recess, 33 ... spring, 43 ... inclined hole, 43a ... upper diameter expansion locking part, 43b ... Lower diameter expansion locking part, 44 …… connecting arm, 45 …… operating protrusion, 46 …… mounting bracket, 47 …… handle part, 48 …… connecting arm, 48a …… post, 48b …… screw, 53 …… Handle, 54 ... Stopper, 54a ... Pin-shaped member, 54b ... Handle, 55 ... Oval hole, 56 ... Round hole, 57 ... Spring, 58a ... Mounting metal fitting, 58b ... Connecting metal fitting .

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Haruhiko Machida 4-10-7 Nakaochiai, Shinjuku-ku, Tokyo (56) References Showa 50-126551 (JP, U) Showa 58-3379, JP Y2)

Claims (1)

[Scope of utility model registration request] 1. A container-shaped inner pot portion, a cylindrical outer wall portion having a diameter larger than or equal to or slightly longer than the inner pot portion, and a lid for closing the opening of the inner pot portion. In the energy-saving pan for heat retention cooking, wherein the inner pot part and the outer wall part are connected by a handle so that a space is formed between the inner pot part and the outer wall part, the outer wall part is provided with respect to the handle. Is movable up and down, at least the outer wall portion is located at a position where at least the bottom portion of the inner pot portion and the lower end of the outer wall portion are flush with each other, and the lower end of the outer wall portion is below the bottom portion of the inner pot portion. An energy-saving pot for heat retention cooking, characterized in that a fixing mechanism for fixing to the handle at a position is formed.